List of Open Source Software

Wine

Category: Compatibility Layer
OS: Linux,BSD and other Unix-based OSes
URL: Winehq.org

Description: Wine allows you to install and use lots of Windows apps in Linux,BSD and other Unixes, w/o modification to the Windows Software.
I use it pretty much everyday. It is still in development even though it is a 13-year old project.

PortableApps Menu

Category: Application Menu
OS: Windows, Linux w Wine or CrossOver, other Unixes w Wine, Mac OSX w CrossOver
URL: Don;t be lazy hit Suite at the top of the page

Description: PAM is the Kick-ass menu for portable devices, no more said since everyone here knows what it is.

Swiftfox

Category: Browser
OS: Linux
URL: Getswiftfox.com

Description: Swiftfox is an optimized fork of Firefox that is a bit faster and is more secure.

Novell Evolution

Category: E-Mail Client
OS: Linux
URL: http://www.gnome.org/projects/evolution/

Description: Novell Evolution is simply the Linux equivalent to MS Outlook, except it is opensource and not made by the Evil Empire. Evolution is kick-ass

Wine-Doors

Category: Dunno
OS: Linux
URL: Wine-doors.org

Description: Wine-Doors is simply WineTools on steroids w/o WineTool's negatives. It eases the installation of Windows apps on Wine, plus it has a menu to install apps from other places. It can also manage other versions of Wine such as CrossOver Linux and Cedega. Wine-Doors is in very early development and is only available via SVN.

Rockbox

Category: Firmware
OS: None
Devices: iPod,iRiver, iAudio, Archos Devices, That MP3 player Sandisk made
URL: Rockbox.org

Des: Rockbox is good firmware that replaces an MP3 player's crappy firmware, Rockbox is chock full o' features you are gonna enjoy, Rockbox can be dual-boot with the original firmware.

Eraser

Cat.: File Shredder
OS: Windows

Blender

Cat. 3-D Modeler
OS: Windows

Dark-Oberon

Cat.: Warcraft-like game, also online one
OS: Windows, Linux and other Unixes

Beryl

Cat: Window Manager, w fancy effects
OS: Linux

KOffice

Cat: Office Suite
OS: Windows (some parts), Linux and other Unixes

GNOME Office

Cat: Office Suite
OS: Windows, Linux

OpenOffice.org

Cat: Office Suite
OS: Solaris, Windows, Linux and I think Mac

Amarok

Cat: Audio Player
OS: Linux

Audacity

Cat: Audio Editor
OS: Windows, Linux

Yahoo Widgets Engine! (it is OpenSource, release under BSD Liscence)

Cat: Widget Engine
OS: Windows, Mac

gDesklets

Cat: Widget Engine
OS: Linux

Scribus

Cat: Desktop Publishing
OS: Windows, Mac, Linux

GParted

Cat: Disc Partioner
OS: Linux

Vixy.net

Cat: Flv online vid converter
OS: None

VLC

Cat: Unviersal Media Player
OS: Linux, Windows

File Roller (can create RARs but it needs extra components)

Cat: Archiver
OS: Linux

Thunderbird

Cat: E-Mail Client
OS: Windows, BSD, Linux, Mac

Firefox

Cat: Web Browser
OS: Windows, BSD, Linux, Mac

7-Zip

Cat: Archiver/File Manager
OS: Windows, Linux

Sound Juicer

Cat: CD Ripper
OS: Linux

GIMP

Cat: Image Editor
OS: Linux, Mac and Windows

Konqueror

Cat: Web Browser, File manager
OS: Windows (limited), Linux

FileZilla

Cat: FTP Client
OS: Windows

Category: MP3 Editing (sorta)
OS: W32 and possibly Linux
Program: MP3Gain
Description: Equalises the volume of several MP3s to the same sound level.

Category: Messaging and Communication
OS: Anything with GTK
Program: Gaim
Description: A great messenger that I use at times.

That's all I could recommend.
----
Ryan McCue
Cube Games
There are only two states in Australia: Queensland and Drunk

Console

Category: terminal emulators
OS: W32
URL: http://sourceforge.net/projects/console
Description: A replacement for the command-line interpreter included with Windows NT. Supports variable opacity for the background, color and cursor customization, and tabs (in 2.0, which is in beta).

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Ultimate Packer for eXecutables (aka UPX)

Category: compression utilities
OS: Various Unices, W32
URL: upx.sourceforge.net
Description: Allows compression of executables, which will self-extract upon execution, and are intended to appear no different to the kernel. It focuses on extremely fast decompression with compression ratios better than general compression formats.

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JAva CheCKSUM (aka Jacksum)

Category: checksum utilities
OS: Platform-independent (uses interpreted binaries)
URL: http://www.jonelo.de/java/jacksum, http://sourceforge.net/projects/jacksum
Description: Command-line utility that supports virtually, if not all, checksum algorithms in existence. Calculates checksums of individual files or whole directories (can operate recursively). It can generate output to the terminal or a file, include metadata such as the version, OS, working directory, etc., and verify files against a list.

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Xming

Category: X compatibility layers
OS: W32
URL: http://www.straightrunning.com/XmingNotes
Description: A minimalistic, but very capable, port of the X Window System to W32. It allows programs that use X to appear on a Windows system, allowing one to use such programs while running Windows.

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GParted (with a description)

Category: Partition editors/disk management utilities
OS: Linux
URL: http://gparted.sourceforge.net
Description: Excellent Partition Magic clone that provides a frontend and efficiency for various command-line filesystem utilites.

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Notepad++

Category: Text editors
OS: W32
URL: notepad-plus.sourceforge.net
Description: Highly customizable Notepad replacement with tabs, syntax highlighting for various programming languages, native plugin capability, and macros.

Sorry, I was about to post a link to another list. But I just read that Patience wants only the ones I have tried my self. Well, besides the ones found on this site, I really have not tried any others.
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"I hear and I forget. I see and I remember. I do and I understand." -- Confucius

Espreon, I was unaware of any W32 port of Konqueror.

Cartes du Ciel is a free sky charting / planetarium software package. The owner has made at least part of the source code available. I have used it with Windows for 5 years and Linux for the past year.

This software will allow you to map the sky and print out charts that list the constellations, stars, galaxies, star clusters, nebulae, asteroids and comets. It contains data from numerous star catalogues, and many other catalogs can be added to the base program. Languages supported are French, English, Spanish, Portuguese, Gzech and Greek.

The program looks and works beautifully. I cannot believe it's still being offered for free, since it's better than many star charting packages that cost over $100 US.

If you are interested in astronomy, you will want to check this out.

GNU Privacy Guard (aka GnuPG or GPG)

Category: encryption utilities
OS: Linux, Mac OS X, W32 (2.0 branch not pursued in W32, but security fixes are maintained)
URL: http://www.gnupg.org
Description: An implementation on the OpenPGP designed to be compatible with PGP (Pretty Good Privacy). Can encrypt/decrpyt and sign/verify messages and files asymmetrically.

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Enigmail

Category: frontends
OS: platform-independent extension for Mozilla Thunderbird
URL: http://enigmail.mozdev.org
Description: Integrates GnuPG into Mozilla Thunderbird, making encrypting/decrypting and signing/verifying emails and attachments with GnuPG muhc faster and easier.

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Cooperative Linux (aka CoLinux)

Category: Linux distributions, kernel ports
OS: W32
URL: http://colinux.sourceforge.net
Description: Runs a Linux distribution and programs on a file containing a filesystem via a port of the Linux kernel to W32. Audio and video must be looped back and processed with external programs since Windows doesn't support X or any of the Linux sound systems. Xming or Cygwin/X can be used for X, Esound* for sound.
Note: I didn't have any problem upgrading the kernel internally with apt-get, though I can't be 100% sure it uses the newer kernel.

*URL: http://www.liquid-reality.de/main/projects/esound

It is ported to Winblows via Cygwin.

Here are some more

Ubuntu Linux
Category: OS,LiveDistro
URL: Ubuntu.com

Azuereus
Cat.: Torrent Client
OS: Linux, Windows and I think Mac
URL: I forgot, Google it

OSSwin.sf.net